He was selected with the 20th pick of the
1980 NBA draft by the
Seattle SuperSonics. A defensive specialist, at the time of his selection Hanzlik had the lowest college scoring average (7.2 ppg) for any player selected in the first round of the draft. Hanzlik played in the
NBA for ten years – two with the Sonics and eight with the
Denver Nuggets. He was a 1986 All-Defense second team selection. Coach Doug Moe often assigned Hanzlik to the opposing team's toughest player to guard, regardless of position, even once defending 7'4" center Ralph Sampson, with success. He worked as an assistant with the Charlotte Hornets and Atlanta Hawks in the 1990s. ==Coaching career==